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Merge pull request #10414 from tacaswell/doc_merge_up_api_whats_new
DOC: merge up api_changes and whats_new
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‎INSTALL.rst‎

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@@ -181,7 +181,7 @@ Matplotlib requires a large number of dependencies:
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(for Python 2.7 only)
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* `subprocess32 <https://pypi.python.org/pypi/subprocess32/>`_ (for Python
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2.7 only, on Linux and macOS only)
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* `kiwisolver <https://github.com/nucleic/kiwi>`__ (>= 1.0.0)
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Optionally, you can also install a number of packages to enable better user
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interface toolkits. See :ref:`what-is-a-backend` for more details on the
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* `PyQt5 <https://pypi.python.org/pypi/PyQt5>`_: for the Qt5Agg backend;
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* :term:`pygtk` (>= 2.4): for the GTK and the GTKAgg backend;
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* :term:`wxpython` (>= 2.9 or later): for the WX or WXAgg backend;
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* `cairocffi <https://cairocffi.readthedocs.io/en/latest/>`__ (>=
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v0.8): for cairo based backends;
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* `pycairo <https://pypi.python.org/pypi/pycairo>`_: for GTK3Cairo;
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* `Tornado <https://pypi.python.org/pypi/tornado>`_: for the WebAgg backend.
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* `Tornado <https://pypi.python.org/pypi/tornado>`_: for the WebAgg backend;
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For better support of animation output format and image file formats, LaTeX,
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etc., you can install the following:

‎doc/api/api_changes.rst‎

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@@ -13,11 +13,281 @@ For new features that were added to Matplotlib, please see
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API Changes in 2.2.0
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====================
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.. toctree::
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:glob:
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:maxdepth: 1
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..
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.. toctree::
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:glob:
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:maxdepth: 1
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next_api_changes/*
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Deprecations
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------------
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Classes, functions, and methods
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The unused and untested ``Artist.onRemove`` and ``Artist.hitlist`` methods have
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been deprecated.
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The now unused ``mlab.less_simple_linear_interpolation`` function is
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deprecated.
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The unused ``ContourLabeler.get_real_label_width`` method is deprecated.
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The unused ``FigureManagerBase.show_popup`` method is deprecated. This
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introduced in e945059b327d42a99938b939a1be867fa023e7ba in 2005 but never built
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out into any of the backends.
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:class:`backend_tkagg.AxisMenu` is deprecated, as it has become
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unused since the removal of "classic" toolbars.
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Changed function signatures
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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kwarg ``fig`` to `.GridSpec.get_subplot_params` is
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deprecated, use ``figure`` instead.
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Using `.pyplot.axes` with an `.Axes` as argument is deprecated. This sets
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the current axes, i.e. it has the same effect as `.pyplot.sca`. For clarity
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``plt.sca(ax)`` should be preferred over ``plt.axes(ax)``.
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Using strings instead of booleans to control grid and tick visibility
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is deprecated. Using ``"on"``, ``"off"``, ``"true"``, or ``"false"``
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to control grid and tick visibility has been deprecated. Instead, use
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normal booleans (``True``/``False``) or boolean-likes. In the future,
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all non-empty strings may be interpreted as ``True``.
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When given 2D inputs with non-matching numbers of columns, `~.pyplot.plot`
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currently cycles through the columns of the narrower input, until all the
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columns of the wider input have been plotted. This behavior is deprecated; in
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the future, only broadcasting (1 column to *n* columns) will be performed.
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rcparams
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~~~~~~~~
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The :rc:`backend.qt4` and :rc:`backend.qt5` rcParams were deprecated
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in version 2.2. In order to force the use of a specific Qt binding,
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either import that binding first, or set the ``QT_API`` environment
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variable.
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Deprecation of the ``nbagg.transparent`` rcParam. To control
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transparency of figure patches in the nbagg (or any other) backend,
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directly set ``figure.patch.facecolor``, or the ``figure.facecolor``
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rcParam.
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Removals
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--------
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Function Signatures
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~~~~~~~~~~~~~~~~~~~
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Contouring no longer supports ``legacy`` corner masking. The
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deprecated ``ContourSet.vmin`` and ``ContourSet.vmax`` properties have
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been removed.
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Passing ``None`` instead of ``"none"`` as format to `~.Axes.errorbar` is no
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longer supported.
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The ``bgcolor`` keyword argument to ``Axes`` has been removed.
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Modules, methods, and functions
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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The ``matplotlib.finance``, ``mpl_toolkits.exceltools`` and
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``mpl_toolkits.gtktools`` modules have been removed. ``matplotlib.finance``
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remains available at https://github.com/matplotlib/mpl_finance.
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The ``mpl_toolkits.mplot3d.art3d.iscolor`` function has been removed.
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The ``Axes.get_axis_bgcolor``, ``Axes.set_axis_bgcolor``,
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``Bbox.update_from_data``, ``Bbox.update_datalim_numerix``,
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``MaxNLocator.bin_boundaries`` methods have been removed.
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``mencoder`` can no longer be used to encode animations.
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The unused `FONT_SCALE` and `fontd` attributes of the `RendererSVG`
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class have been removed.
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color maps
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~~~~~~~~~~
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The ``spectral`` colormap has been removed. The ``Vega*`` colormaps, which
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were aliases for the ``tab*`` colormaps, have been removed.
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rcparams
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~~~~~~~~
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The following deprecated rcParams have been removed:
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- ``axes.color_cycle`` (see ``axes.prop_cycle``),
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- ``legend.isaxes``,
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- ``svg.embed_char_paths`` (see ``svg.fonttype``),
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- ``text.fontstyle``, ``text.fontangle``, ``text.fontvariant``,
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``text.fontweight``, ``text.fontsize`` (renamed to ``text.style``, etc.),
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- ``tick.size`` (renamed to ``tick.major.size``).
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Removal of unused imports
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-------------------------
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Many unused imports were removed from the codebase. As a result,
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trying to import certain classes or functions from the "wrong" module
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(e.g. `~.Figure` from :mod:`matplotlib.backends.backend_agg` instead of
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:mod:`matplotlib.figure`) will now raise an `ImportError`.
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Exception type changes
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----------------------
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If `MovieWriterRegistry` can't find the requested `MovieWriter`, a
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more helpful `RuntimeError` message is now raised instead of the
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previously raised `KeyError`.
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`~.tight_layout.auto_adjust_subplotpars` now raises `ValueError`
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instead of `RuntimeError` when sizes of input lists don't match
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`Figure.set_figwidth` and `Figure.set_figheight` default forward to True
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------------------------------------------------------------------------
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`matplotlib.Figure.set_figwidth` and `matplotlib.Figure.set_figheight`
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had the kwarg `forward=False`
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by default, but `Figure.set_size_inches` now defaults to `forward=True`.
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This makes these functions conistent.
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Do not truncate svg sizes to nearest point
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------------------------------------------
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There is no reason to size the SVG out put in integer points, change
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to out putting floats for the *height*, *width*, and *viewBox* attributes
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of the *svg* element.
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Fontsizes less than 1 pt are clipped to be 1 pt.
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------------------------------------------------
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FreeType doesn't allow fonts to get smaller than 1 pt, so all Agg
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backends were silently rounding up to 1 pt. PDF (other vector
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backends?) were letting us write fonts that were less than 1 pt, but
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they could not be placed properly because position information comes from
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FreeType. This change makes it so no backends can use fonts smaller than
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1 pt, consistent with FreeType and ensuring more consistent results across
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backends.
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Changes to Qt backend class MRO
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-------------------------------
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To support both Agg and cairo rendering for Qt backends all of the
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non-Agg specific code previously in
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:class:`.backend_qt5agg.FigureCanvasQTAggBase` has been moved to
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:class:`.backend_qt5.FigureCanvasQT` so it can be shared with the cairo
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implementation. The :meth:`.FigureCanvasQTAggBase.paintEvent`,
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:meth:`.FigureCanvasQTAggBase.blit`, and
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:meth:`.FigureCanvasQTAggBase.print_figure` methods have moved to
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:meth:`.FigureCanvasQTAgg.paintEvent`, :meth:`.FigureCanvasQTAgg.blit`, and
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:meth:`.FigureCanvasQTAgg.print_figure`. The first two methods assume that
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the instance is also a :class:`QWidget` so to use
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:class:`FigureCanvasQTAggBase` it was required to multiple inherit
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from a :class:`QWidget` sub-class.
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Having moved all of its methods either up or down the class hierarchy
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:class:`FigureCanvasQTAggBase` has been deprecated. To do this with
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out warning and to preserve as much API as possible,
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:class:`.backend_qt5.FigureCanvasQTAggBase` now inherits from
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:class:`.backend_qt5.FigureCanvasQTAgg`.
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The MRO for :class:`FigureCanvasQTAgg` and
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:class:`FigureCanvasQTAggBase` used to be ::
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[matplotlib.backends.backend_qt5agg.FigureCanvasQTAgg,
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matplotlib.backends.backend_qt5agg.FigureCanvasQTAggBase,
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matplotlib.backends.backend_agg.FigureCanvasAgg,
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matplotlib.backends.backend_qt5.FigureCanvasQT,
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PyQt5.QtWidgets.QWidget,
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PyQt5.QtCore.QObject,
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sip.wrapper,
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PyQt5.QtGui.QPaintDevice,
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sip.simplewrapper,
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matplotlib.backend_bases.FigureCanvasBase,
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object]
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and ::
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[matplotlib.backends.backend_qt5agg.FigureCanvasQTAggBase,
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matplotlib.backends.backend_agg.FigureCanvasAgg,
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matplotlib.backend_bases.FigureCanvasBase,
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object]
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respectively. They are now ::
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[matplotlib.backends.backend_qt5agg.FigureCanvasQTAgg,
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matplotlib.backends.backend_agg.FigureCanvasAgg,
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matplotlib.backends.backend_qt5.FigureCanvasQT,
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PyQt5.QtWidgets.QWidget,
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PyQt5.QtCore.QObject,
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sip.wrapper,
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PyQt5.QtGui.QPaintDevice,
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sip.simplewrapper,
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matplotlib.backend_bases.FigureCanvasBase,
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object]
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and ::
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[matplotlib.backends.backend_qt5agg.FigureCanvasQTAggBase,
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matplotlib.backends.backend_qt5agg.FigureCanvasQTAgg,
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matplotlib.backends.backend_agg.FigureCanvasAgg,
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matplotlib.backends.backend_qt5.FigureCanvasQT,
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PyQt5.QtWidgets.QWidget,
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PyQt5.QtCore.QObject,
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sip.wrapper,
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PyQt5.QtGui.QPaintDevice,
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sip.simplewrapper,
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matplotlib.backend_bases.FigureCanvasBase,
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object]
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New dependency
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--------------
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`kiwisolver <https://github.com/nucleic/kiwi>`__ is now a required
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dependency to support the new constrained_layout, see
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:ref:`sphx_glr_tutorials_intermediate_constrainedlayout_guide.py` for
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more details.
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`Axes.imshow` clips RGB values to the valid range
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-------------------------------------------------
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When `Axes.imshow` is passed an RGB or RGBA value with out-of-range
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values, it now logs a warning and clips them to the valid range.
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The old behaviour, wrapping back in to the range, often hid outliers
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and made interpreting RGB images unreliable.
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GTKAgg and GTKCairo backends deprecated
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---------------------------------------
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The GTKAgg and GTKCairo backends have been deprecated. These obsolete backends
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allow figures to be rendered via the GTK+ 2 toolkit. They are untested, known
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to be broken, will not work with Python 3, and their use has been discouraged
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for some time. Instead, use the `GTK3Agg` and `GTK3Cairo` backends for
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rendering to GTK+ 3 windows.
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next_api_changes/*
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API Changes in 2.1.2

‎doc/api/api_changes/2017-09-29_JMK_constrained_layout_api.rst‎

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‎doc/api/api_changes/2018-01-26-ZHD.rst‎

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‎doc/api/api_changes/2018-02-04-AL.rst‎

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‎doc/api/api_changes/2018-02-10-ES.rst‎

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‎doc/api/next_api_changes/01-11-2017-DS.rst‎

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‎doc/api/next_api_changes/171225-AL-tickbools.rst‎

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‎doc/api/next_api_changes/2017-09-22-AL-contour.rst‎

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‎doc/api/next_api_changes/2017-09-22-AL-removal-of-deprecated-features.rst‎

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